Sashiko (刺し子, lit. "little stabs") is a type of traditional Japanese embroidery or stitching used for the decorative and/or functional reinforcement of cloth and clothing.

Sashiko utilises mostly geometric patterns, which fall into two main styles; moyōzashi, in which patterns are created with long lines of running stitches; and hitomezashi, where the pattern emerges from the alignment of single stitches made on a grid. Common sashiko motifs are waves, mountains, bamboo, arrow feathers, shippō-tsunagi, pampas grass and interlocking geometric shapes, amongst others; sashiko embroidery is traditionally applied with the use of specialist needles and thread, though modern day sashiko may use modern embroidery threads and embroidery needles.